Tek-Tips is the largest IT community on the Internet today!

Members share and learn making Tek-Tips Forums the best source of peer-reviewed technical information on the Internet!

Register Log in
  • Congratulations TugboatEng on being selected by the Eng-Tips community for having the most helpful posts in the forums last week. Way to Go!

Search results for query: *

  1. msmedesign

    P92 material mechanical and creep properties

    I am trying to establish pressure temperature chart for P92 / F92 material. This material has been in use for more than a decate but not listed under ASME Section II Part D, ASME B31.1 or ASME B31.3. Please let me know if there is any publication for P92/F92 material which lists the yield...
  2. msmedesign

    High Temperature limit of the ASTM A193 and A194

    Which piping code specifies the high temeperature limt of the following most common used bolting materials? (For valves to be used in ASME B31.3) ASTM A193 B7, B7M, B8, B8M, B16 .. ASTM A194 Grade 4, 7, 8, 8M, .. Thanks
  3. msmedesign

    High Mn content on ASTM A351-2003 grade CD4MCu

    I have received a valve casting per ASTM A351-2003 grade CD4MCu. I performed Positive Identfication Inspection (PMI) and found all the elements meets the ASTM specification with exception of Mn%. Instead of max 1% Mn material that I received has Mn 1.5 % - 2%. Manganise should improve the...
  4. msmedesign

    Why A182 F6 (410 - 13%Cr) material ins not in ASME B16.34

    I wondering why ASTM A182 F6 or A276/A479 Grade 410 material is not included in ASME B16.34 material list. 410 grade material has been used as stem material (Stem is also pressire retaining part) Thanks
  5. msmedesign

    Fire safe

    Southwest Research in San Antonio Yarmonth Boston
  6. msmedesign

    Tolerance on Mechanical (Tensile/Yield) Product of WCB test results

    Dear Swall I want to review as many as possible technical documentation about this subject so that I can come up with a reasonable solution (technically sound) for both the foundry and for me and for my customers. Otherwise foundry would tell me it is OK as it is , end-user will require to meet...
  7. msmedesign

    Tolerance on Mechanical (Tensile/Yield) Product of WCB test results

    I am performing standard tensile test per A370 ASTM A703 stated product testing acceptance criteria shall be agreed between manufacturer and customer, but no tolerance is given.
  8. msmedesign

    Tolerance on Mechanical (Tensile/Yield) Product of WCB test results

    I have been performing mechanical test on speciments from the actual product to verify mechanical properties of WCB cast parts. About 50% percent of the test results were lower than ASTM A216 WCB requirements. (within 10%) I tested the foundry samples for the same heats and found all of them...
  9. msmedesign

    1000F temperature limit on flanged valves per ASME B16.34

    Nozzle Twister I have talked some of the ASME B16 members and they believe 1000F limitation on some flanged materials are a editorial mistake. This limitation only applies to Class 150 flanges. (As you stated). I think you should review your 1200 F to 1400 F FCC unit valves. 1)If the valves are...
  10. msmedesign

    1000F temperature limit on flanged valves per ASME B16.34

    dave but ASME B16.5 does not have the same limitation for the same material group.I think thermal cycling would have the same affect on any equipment.
  11. msmedesign

    1000F temperature limit on flanged valves per ASME B16.34

    Refinary cracker unit.
  12. msmedesign

    1000F temperature limit on flanged valves per ASME B16.34

    I was wondering why there is 1000 F temperature limit on ASME B16.34 for flanged end-connections, but ASME B16.5 does not have 1000F temperature limitation. (Please see foot note on the material tables. Example material group 1.16) Thanks
  13. msmedesign

    Isothermal compressibility & volume expansitivity

    I am trying to calculate the pressure increase due to temperature increase of a fluid which is trapped in the pipiline under temerature increase. I know the P1 and T1, T2 and thermal expansion ratio of the fluid. Please let me know how to calculate the P2 Thanks
  14. msmedesign

    What factor should we consider about ball valve?

    Commissioning means new pipeline, which has not only debris from the gas but also metal weld wire, weld debris, mud, stone from the pipeline fabrication. Recommmendation to prevent seat leakage due to debris during commisioning; Keep the valve in open position Apply proper grease to the gap...
  15. msmedesign

    What factor should we consider about ball valve?

    Usually other required cerification review, an ISO 9001 audit will give a good idea of the supplier. As you mentioned, the design of the ball valves look similiar to each other, small details makes big difference on how the valve is going to perform. ( combination of material, design and...
  16. msmedesign

    Check Valve / Non Return Valves RCM Study

    if check valve installed close to the pump, or if they are not chooosen correctly, valve does not stay at fully open position and it oscillates. This chattering or oscillation creates extra wear on the bearings and also it might cause damage on some of the mechanical connection.
  17. msmedesign

    Help needed for Class IV Shutoff

    Per ANSI/FCI70-2-1991 Class IV shut-off described as 0.01% of rated valve capacity. Test procedure A. Valve capacity described as “the quantity of test fluid (air or water) that would pass through the valve at rated travel under the stated pressure conditions as determined by the appropriate...
  18. msmedesign

    16" API 10000 Ball Valve seal design

    off course it exists but in my product line
  19. msmedesign

    Cryogenic Valve Design

    there are many parameters that effects your sealing other than surface surface roughness such as form tolerances and also strrength of the material that you use. I f you give us more info about your design and how you have it ttested and failure .... I might be able to help you out.
  20. msmedesign

    SS 316 and 316L Stainless Steel Materials with high strength

    Also try Nitronic50 or 60 Not too expensive but good mechanical, chemical and low temp properties

Part and Inventory Search

Back
Top